Shuttering for molding concrete walls in situ



July 8, 1952 R. w. RUMBLE I SHUTTERING FOR MOLDING CONCRETE WALLS INSITU Filed Aug. '2, 1947 2 SPEETS -SI-IEET l y 8, 1952 w. RUMBLESHUTTERING FOR MOLDING CONCRETE WALLS INISITU 2 SHEETSSHEET '2 FiledAug. 2. 1947 I [Eu enfor- Aea/ ML 4121M 190/ 154: 4" M w land- PatentedJuly 8, 1952 J -UN TE STATES sr-mri'anma FOR MOLDINGcoNCREu- E 'WALLSINsITU "Roy William Rumble, 'Pretorim Transvaal,

. =Union of South Africa -ApplicationA1 lgust 2, 1947, Serial -Nf765-,659

Inthe Union of South Africa; September-21,1945

. Section 1, Public Law"69Q','A1i gust-8, 1946 i'Patent expiresSeptember 21, 1965' SClaims. (ems-131) consist in modifying thetemperature of thematerial by either heating or cooling it. Concrete mayfor instance be heated in order to promote its setting, or massiveconcrete maybe artificially cooled in order to hasten the elimination ofthe heat given out by the exothermic setting of the cement. Then againthe treatment may consist in injecting into the moulded material a fiuidsubstance for instance to promote or hasten setting, such treatmentbeing described and claimed in my co-pending United States applicationSerial No. 765,657, filedAugust 2, 1947, now abancloned. Or againthetreatment may consist in .:withdrawi ng surplus liquid from the. mouldedmaterial inorder to promote rapid setting-which treatment is describedor claimed in my co-pending: United States application SerialNo."765,658,

iiledfAugust 2, 1947, now abandoned.

' The. object of the present invention is to provide a shutteringassembly and units suitable to be connected together to form such anassembly, which are well adapted for such treatment to be applied to themoulded material while the shuti tering" remains in the mouldingposition. shuttering according to the invention is formed '"with a rigidface plate providing the moulding face; and the plate is'fluid-pervious.The shutteri'ng comprises an internal cavity separated "mm the mouldingcavity by the plate, and means do-connect the cavity with externalstructure in "fiuid transferring relationship. structuremay be a'sourceof fluid, if the fluidis Ttobe' passed through the pervious plate; or iffluid is to be withdrawn from the moulded material through the perviousplate, "the external structure maybe suction means to "create aconf'di'tion of sub-atmospheric pressure in the cavity;

The external N'convenient form of cavity is to provide a "series'ofchannels in the shuttering, the channels intercommunicating to form acontinuous confduit; which isconne'cted to s'aidfexternal structure. Thechannels may consist of' a'pipe grid,

or off corrugated stiffening formations- Ing the Flatterrcasejthechannels maybe definednbythe "backand face plates and the formations.

Theremay "also be; provided a-filter medium associated with the faceplate and such medium may itself provide the moulding face. When liquidisdrawn from the moulded material the medium-acts to prevent fine solidmatter suspended in the liquid from beingwithdrawn. H

'The'zshuttering is desirably assembled from shuttering units. In thatcase, eachunit comprises 1 elements which collectively-providetheshuttering features mentioned'above. That; is to "say 'each comprises arigid face plate andcthe plates of theassembled units together provide acontinuousmoulding face, and each comprises "also aback plate and acavity or channels, means being provided to connect thecavities orchanrnels-to constitute one or. more continuous conplus liquid withdrawnthrough the moulding face of each unit.

The invention is illustrated in the accompanyduits through which fluidmay be forced, or suring drawings in which 4 Figure I shows a pair ofshuttering walls :forming amoulding'space between them,

Figure II is a similarview, but showing modified shuttering and I I w li Figure III is an enlarged detail of part of-Figure II.

Figure I shows a pair of shuttering walls 2land -3 formingbetween them aspace 4 in which plastic concreteisplaced to form the wall of abuilding.

Each wall is'constructed of panels Sand walingmembers 6. The edges 1 ofthe panels are formedwith grooves 8 in which the tongued edges 9 of thewaling members 6 engage; the waling -membershaving-hooked flangeslnwhich engage with shoulders H of thepanels-to; hold the latter in,position in the Wall. Each panel comprises a thin face platelt-whichprovides the moulding face' I3 of the panel and from whichjplate' theformededges I extend backward to form a'shal- :low. cavity l4- which iscoveredin bya back plate '45 I5. The thin plate I2 is suitablystiifenedto wsustain the pressure of the concrete'mix.

.to-be connected .bythe couplingpipesll 8.

the fluid passages into the Each pipe grid 16 is welded or otherwiseconnected to the back of its face plate l2 so that it forms the meansfor stiffening said plate and is in rapid heat conducting relationshipwith said plate.

In the use of this kind of shuttering the units are built up asdescribed. A fluid supply pipe 19 is provided and coupled to the gridsl6 in the panels; either to individual grids or to groups of connectedgrids as shown. Whenthe concrete has been poured into the cavity 4, anappropriate fluid is fed to the grids from the pipe 19, such as steam toaccelerate the setting of the concrete;

or cold water or air to minimize heating of the oblong form; and in theexample marked 20,

the ribs 22 extend parallel to the long edges of the panel, whilst thosein panel 2i extend'parallel to the short edges of the panel.

; Alternate ribs such as 22 abut at one end againstthe interior of paneledges 1, and are spaced from the adjacent panel edges at their otherends. The intervening ribs 22 are oppositely arranged so that thecollection of ribs forms a grid channel 23 similar to that formed by the-pipe grids [6 in Figure I.

The panels indicated by 24 have their moulding plates 12 perforated forthe passing of fluid forced under pressure from the interior cavities ofthe panels to the moulded material; or for the-passage of fluid from themoulded material into the panel cavities by suction set up in thelatter. If it is desired to prevent the movement of solids for examplecement particles in suspension in superfluous water that is withdrawnfrom the mould cavity, a filter layer 25 is'provided either within theface plate or at the external face of said plate as shown in the case ofthe panel marked 26. Whenhot or coldfluid is circulated through thepanels, heat transfer through the back-ofthe panel is minimized by alayer of heat insulating material 21 at the back of thepanel.

In the examples shown in Figure 'II the-fluid connections to theinterior of the panels de-. scribed are made through the hollow cornermembers 28 of the shuttering and the hollow waling members 6. The cornermember shown isi'ltted at say its upper end with any convenient meanssuch as a hose for connecting its internal'cav ity' to a source ofsupply of fluid under pressure or to a vacuum chamber as thecase may be.Apertures 29 are formed in the sides of said corner member and areprovided with resilient gaskets 30 for'jointing with the ends of thewaling members which are pressed into contact with them.

Similarly gasketed apertures 31 in the sides of the waling membersconnect with'g'asketed apertures 32 in the edgesjl of the panelstocon'tinue interior fcavities' of the panels," which are closed in fiuidtightly by the back plates 24 r Iclaimfi; i

H 7 1. shuttering for mouldingmaterial for: a building in situ,saidshutte'rin'g consisting of an assembly of separable units eachcomprising a rigid flat plate, one face of which constitutes a mouldingface, the faces of the units providing collectively a continuous planemoulding surface, a back plate rigidly attached to the flat plate inspaced relationship so as to provide an internal cavity between the twoplates, channels within each cavity providing a conduit, means betweenthe units for connecting the conduits of the units in series to form asingle extended continuous conduit; means to connect the extendedconduit to external structure in fluid transferring relationship;- and aseries of apertures through the face plate and providing communicationbetween the moulding face and the conduit.

2. The shuttering claimed in claim 1 wherein said channels are parallel.

3. The shuttering claimed in claim 1 wherein the channels compriseparallel stiffening formations between the plates, the formations inadjacent units running respectively horizontally and vertically; theformations in each unit bein spaced alternately from one and the otheredge of the cavity wall.

4. A shuttering unit having means for separably connecting it with otherunits to'form a shuttering assembly suitable for moulding ma- 'terialfor a building, the unit comprising a rigid flat plate one face of whichconstitutes a moulding face, a back plate connected to the flat plate inspaced relationship so as to provide a cavity between the two plates;channels provided witht in each cavity, means connecting the channels ofeach unit in series to form (when assembledwith other units) an extendedand continuous conduit', means to connect theconduit to externalstructure in fluid-transferring relationship and a series of aperturesthrough the face plate and providing communication between the conduitand the moulding face. 7 g

5. The unit claimed in claim 4 wherein said channels are parallel. v

6. The unitclaimed in claim 4 wherein the channels are staggered withthose of alternate formation in line with each other.

'7 shuttering for moulding material for a building, comprising anassembly of separable units each comprising a rigid flat plate one faceof which constitutes a moulding face, the faces of the units providingcollectively a continuous plane moulding surface, a back plate rigidlyattached to the flat plate in spaced relationship so as to provideaninternal cavity between the plates, channeling in the cavity providinga conduit, a series of apertures in the. moulding face of each unitproviding communication between the moulding face and the channeling ofthe unit,

, structure on each unitat each horizontal edge recessed to receivecomplementally shaped waling members between adjacent horizontal edgesand .vals; apertures in the horizontaledges-of the units which registerwith the apertures in the wa ling' members to comiect the conduits withthe. cavities ofv the walingmembers; .and means toconnect the cavitiesof the .-waling members with external structure in fluid-transferringrelationship-.-

1 s. Shuttering as aimed in. claim 7 comprising parallel stiffeningformations between the two ROY WILLIAM RUMBLE.

REFERENCES CITED The following references are of record in the 10 fileof this patent:

UNITED STATES PATENTS Number Number Name Date George June 26, 1923Gordon Jan, 30, 1934 Billner July 7, 1936 Billner May 10,- 1938 LapidusMay 4, 1943 Whittenberg June 1, 1948 FOREIGN PATENTS Country DateAustralia Dec. 2, 1943

